Hey nevermind, I'm running this copy of se4 from my jumpdrive at work
and I forgot I didn't have ImageMod on it.
I didn't think to install imagemod because I didn't see any requirement for it anywhere.
Thanks to Fyron (you run se.net, right??) for the self-extracting 7-zip file, without which I would not have been able to install imagemod on this computer without admin privs and a .rar prog.